Ferry-slip.



R. T. STONE.

. FERRY SLIP.

APrLIoA'HoN FILED AUG. 11. 1910.

Patented Jan. 24, 1911.

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R. T. STONE.

FERRY SLIP.

1211110111011 FILED AUG. 11, 1010.

982,643; Patented Jan 24, 1911.

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UNITED STATES PATENT OFFICE.

RICHARD TAYLOR STONE, OF OAKLAND, CALIFORNIA.

FERRY-SLIP.

Specification of Letters Patent.

Patented Jan. 24., 1911.

Application led August 11, 1910. Serial No. 576,621.

` as the boat passes over the point struck and enters the slip, the slip pointed portion of the slip will automatically return to normal position.

This invention further has for its object i to provide an improved ferry slip so constructed and arranged that the part of the slip struck by the boat in entering the slip will act as a cushion and take up the shock of the blow.

The invention further has for its object to provide an improved ferry slip so constructed and arranged that as the parts of the sides of the slip are worn or broken they may be readily replaced.

The invention further has for its object to provide an improved ferry slip which will be economical and durable.

The invention consists in an improved ferry slip and in details of construction thereof as hereinafter set forth and claimed.

Referring to the accompanying` drawings :-Figure 1 is a plan View of one of the points and the sides of a ferry slip eonstructed in accordance with this invention. Fig. 2 is a side view thereof.

Ferry slips as usually constructed are formed with two diverging sides each of which terminates in a point. The sides of the slip are formed of piles driven into the mud and with a planking secured to and extending over said piles so as to form a surface against which the boat bumps and glides when entering the slip. The foregoing construction owing to the length of the piles above the muddy bottom has a` yielding or swaying movement when the boat entering the same 1s forced against the 4slip and thereby in the course of time the piles are loosened from their foundation. Furthermore, owing to the hmslness of the structure the repeated bumplng and clashing of the boat against the sides of the slip causes the planking and piles to be broken from time to time, thereby involving considerable expense of repair.

The present invention has for its object to overcome these objections, and to provide a strong and durable ferry slip.

In carrying out the invention a portion of each side of the ferry slip .is formed of a separate section which is laterally movable on the main or fixed portion and is adapted to swing from its normal position when struck by a boat entering the slip. The sides of the ferry slip constructed with this laterally swinging section may be con` structed in any suitable manner, and, as here shown, is preferably constructed as follows Each side of the ferry slip is formed with a foundation of piles 1 driven into the bottom of the river, or other body of water, so as to be firmly held in place. Upon the piles 1 is mounted a floor of timbers 2, on which is supported a suitable structure which consists of a number of slip timbers 3, having their lower ends resting in sockets not shown in the slab 4 and their upper ends projecting through holes 5 in the lip G projecting from the main body portion 7 formed of concrete. Hinged to the front of the structure just described is an extension 8 in the side of the slip which is of a suitable length and which has tapering sides for making the extension serve as a point to the side of the slip. The main portion of this swinging point is formed of concrete 9, preferably with an open central portion 1() for the sake of lightness. The lower end of the swinging point S is formed with a base portion 11 having a projecting slab 12 provided with sockets not shown, in which rests the lower ends of vertical slip timbers 13 having their upper ends projecting through holes 111 in a lip 15 projecting laterally from the upper part of the concrete portion 9. The swinging point 8 is connected with the main portion of the slip by means of a vertical rod 1G which has its lower end 17 embedded in concrete in the main portion of the slip and projecting up through the rounded extension 1S at the rear end of the point 8 which fits into a correspondingly shaped vertical curved recess 19 in the front of the main portion 7 of the side of the slip. The rear end of the portion 8 is spaced apart from the main portion 7 so as to permit of a swinging movement of the point 8. The upper end of the rod 16 projects above the top of the point 8 and is mounted in a bracket formed with a socket portion 2O in which the end of the rod 16 is seated and with the diverging arms 21 secured to and embedded in the concrete of the main portion 7.

The front of the main portion 7 is reinforced by a metallic casing consisting of plates 22 having a central curved portion 23 in which is located a curved projection 18 of the point 8. In order to maintain the point 8 in normal position and also to automatically restore it to normal position when swung out of said position and also to cause it to serve as a cushion or yielding abutment, suitable springs are provided between its rear end and the main portion of the side of the slip. As here shown, coil springs 211 are provided located between the rear end of the point 8 and the front of the main portion 7, said coil springs being connected at one end with the plates 22 and at the 'other end with plates 25 on the rear end of the point 8.

(26) indicates the water line, and as shown in Fig. 2, the lower end of the swinging point 8 1s located above the foundation of the main portion of the side of the slip and is thereby permitted to have a laterally swinging movement.

The vertical slip timbers hereinbefore referred to may be square or round. Square pieces are preferably employed as the same may be readily obtained of a uniform size and Vthey can be changed in position so as to provide diiferent sides on the outer side of the side of the slip. In case a slip timber is destroyed, another can be easily replaced by lowering it through one of the upper socket holes. In case of breakage, the front row of slip timbers and succeeding row or rows can be taken out and put in place of the broken ones in the front row. It will be seen that by means of this construction and arrangement of the slip timbers, parts of the slip may be readily repaired and replaced when broken or worn oli.

The portion of the slip which a ferry boat generally strikes as it attempts to enter the slip is the outer end of the side or the pointed portion and therefore in the present construction-as hereinbefore set forththe laterally swinging point 8 will be the portion of the slip to be struck by the boat. As the boat strikes the point 8, the latter will yield laterally, and owing to the springs connected with the point 8 will serve asia cushion to relieve the shock of the blow caused by the boat bumping against the same. As the boat eases up from the point 8, the latter will be automatically restored to its normal position and the boat continue to enter the slip, gliding against the remainder of the slip. It should be noted that the rod 16 is somewhat loosely mounted in its bear- 3. A ferry slip of the character described, l

having each of its sides formed with a stationary main portion formed with a superstructure of vertical slip timbers, a swinging pointed portion hinged to the front or stationary portion, and means for maintaining and automatically restoring to its normal position the swinging pointed portion.

4. A ferry slip of the character described,

having each of its sides formed with a stationary sub-structure, a super-structure ofvertical slip timbers, a laterally swinging pointed portion hinged to the front of the super-structure and formed with vertical slip timbers, and means for maintaining and restoring to normal position the swinging point,

5. A ferry slip of the character described, having a lower bed frame having sockets and an upper frame with a lip having transverse holes and vertical detachable slip timbers having their lower ends seated in the sockets in the lower frame, and their upper ends projecting through the holes in the lip of the upper frame.

6. A ferry slip of the character described, having each of its sides formed with a stationary main portion, and a laterally swinging pointed portion and springs located between said swinging portion and said main or fixed portion.

7. A ferry slip of the character described, having each of its sides formed with a main portion consisting of a foundation of iiXed piles, a iooring at the top of said piles, a

slab on said flooring havingsockets, a central filling of concrete, a lip projecting laterally from the top of said concrete filling and having transverse holes, vertical detachable slip timbers having their lower ends seated in the sockets of said slab and their upper tween said point and said main portion, and coil springs located between said point and said main portion on each side of said hinged ortion,

8. A ferry slip of the character described, having each of its sides formed with a foundation, a super-structure mounted on said foundation consisting of a central filling of concrete, and upper and lower lips, the lower' lip having sockets and the u per lip having transverse holes, Vertical il timbers having their lower ends mounted in said sockets and their upper ends in said holes, the front of said main portion of concrete being formed with a vertical transverse curved recess and a metallic casing extending over the front of said main portion and said recess,l a laterally swinging point formed with a filling of concrete having a curved projection at its rear located in the curved recess of the main structure, a base portion with a lip having sockets, a lip at the top projecting from said concrete and having transverse holes, detachable slip timbers mounted in said sockets and holes, a metallic supporting piece mounted on the etachable slip4 top of the main structure and projectinf over said curved recess in the front thereo a vertical rod rejecting through the rear end of said swinging point and having its bearings in the main structure and said metallic piece, plates on the rear end of said point, and coil springs located between said plates and the metallic casing in front of the main structure.

9."A ferry slip of the character described, having each of its sides formed with a main or fixed portion, said main portion having inclined sides provided with slip timbers, a point formed with inclined sides each having slip timbers, said point being hinged to the front of the main fixed portion and springs for automatically holding said point in normal position and causing said point to be restored to normal position when moved away therefrom.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD TAYLOR STONE.

Witnesses:

F. P. SGHROEDER, I-I. C. SG1-momma. 

